kind of unrelated but, in Afghanistan one of the armored trucks I drove called an M-ATV would say "no bus" if you improperly shut off the battery power to the ecm, we then had to disconnect the batteries and reconnect them and it was good to go.
Basicaly what happens is when you don't allow it to shut off correctly the ecm wont be able to detect the sensors (maf, tps, cps, etc) may be similar , pehaps your compter is going bad?
97 #1 TJ 4.0 5spd - built,beat,rolled,totaled,stripped, and SOLD
97 #2 TJ 4.0 5spd and some stuff from - savvy, rokmen, corbeau, a-z fab, rock hard 4x4,metal cloak, and others ....slowly building it up
06 Civic - tint + 36mpg